Allen-Bradley 140M-C2E-B63 Motor Protection Circuit Breaker

The Allen-Bradley 140M-C2E-B63 Motor Protection Circuit Breaker is a three-pole manual motor protector that provides motor switching plus thermal overload protection and fixed magnetic short-circuit protection for three-phase motors. It is part of the Bulletin 140M family and is commonly installed in motor control centers, conveyors, pumps, compressors, and industrial machinery where compact motor protection and a manual disconnect are required, making it a practical choice for maintenance teams, electricians, and OEMs replacing legacy starters. The 140M-C2E-B63 configuration offers adjustable thermal protection and a fixed magnetic trip (13–14 × Ie max.) for motors with a full-load current range of 4.0–6.3 A, within a Frame Size C (32 A). It is rated for up to 600 VAC at 50/60 Hz, with adjustable bimetal overload protection, a trip class of 10, and differential release for phase loss protection. Additional specs include a rated impulse withstand voltage of 6 kV and a maximum short-circuit rating of 65 kA at 480 VAC. Mounting supports both DIN Rail and panel installation, and operation is via a rotary ON/OFF handle. Compatible with Allen-Bradley 100-C09 and 100-K05 contactors, it suits industrial automation systems, HVAC equipment, water treatment facilities, and manufacturing plants requiring reliable motor protection and easy isolation. For cross-reference, the 140M-C2E-C10 is a related replacement.